Differential space-time-frequency coded OFDM with maximum multipath diversity

Addressing orthogonal frequency division multiplexing (OFDM) transmissions over frequency-selective Rayleigh fading channels, we propose a differential space-time-frequency (DSTF) coding scheme with maximum multipath diversity. Resorting to subcarrier grouping, we convert the system into a set of parallel DSTF systems, within which DSTF coding is considered. Through pairwise error probability (PEP) analysis, we prove that full diversity gain, which is the product of the number of transmit antennas, receive antennas, and the multipath channel length, can be achieved without channel state information (CSI) at the receiver. We analyze the performance of group DSTF coding over correlated fading channels and establish the design criteria for subcarrier selection and code selection. In addition to applying existing differential unitary diagonal codes, we propose a systematic approach to designing nondiagonal codes for DSTF systems, which are block diagonal (BD) and have the necessary unitary and full diversity properties. Based on permutation techniques, we have devised new excellent-performing BD DSTF codes, which significantly improve the coding gain as compared to their diagonal counterparts. Corroborating simulations confirm the merits of our approach.

[1]  Thomas L. Marzetta,et al.  Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading , 2000, IEEE Trans. Inf. Theory.

[2]  Qian Ma,et al.  Full diversity block diagonal codes for differential space-time-frequency coded OFDM , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[3]  Suhas N. Diggavi,et al.  Differential space-time coding for frequency-selective channels , 2002, IEEE Communications Letters.

[4]  Kenneth L. Clarkson,et al.  Fast multiple-antenna differential decoding , 2001, IEEE Trans. Commun..

[5]  Kung Yao,et al.  Differential unitary space-time modulation for a large number of receive antennas , 2002, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002..

[6]  Georgios B. Giannakis,et al.  Space-time-frequency coded OFDM over frequency-selective fading channels , 2002, IEEE Trans. Signal Process..

[7]  Babak Hassibi,et al.  Fully-diverse multiple-antenna signal constellations and fixed-point-free Lie groups , 2001, Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252).

[8]  Aleksandar Dogandzic,et al.  Chernoff bounds on pairwise error probabilities of space-time codes , 2002, Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002.

[9]  Georgios B. Giannakis,et al.  Block differentially encoded OFDM with maximum multipath diversity , 2003, IEEE Trans. Wirel. Commun..

[10]  Brian L. Hughes,et al.  Differential space-time modulation , 1999, WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466).

[11]  Helmut Bölcskei,et al.  Code Design for Non-Coherent MIMO-OFDM Systems ∗ , 2002 .

[12]  Babak Hassibi,et al.  Cayley differential unitary space - Time codes , 2002, IEEE Trans. Inf. Theory.

[13]  C.C. Ko,et al.  A multi-stage Levinson-Durbin algorithm , 2002, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002..

[14]  Babak Hassibi,et al.  Representation theory for high-rate multiple-antenna code design , 2001, IEEE Trans. Inf. Theory.

[15]  Xinying Yu,et al.  Codes for differential signals in the presence of large numbers of antennas , 2002, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002..

[16]  Ran Gozali,et al.  Space-Time Codes for High Data Rate Wireless Communications , 2002 .

[17]  Hamid Jafarkhani,et al.  Multiple transmit antenna differential detection from generalized orthogonal designs , 2001, IEEE Trans. Inf. Theory.

[18]  Bertrand M. Hochwald,et al.  Differential unitary space-time modulation , 2000, IEEE Trans. Commun..

[19]  D. Wang,et al.  A confidence-score based unsupervised MAP adaptation for speech recognition , 2002, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002..

[20]  Hongbin Li.  Differential space-time modulation with full spatio-spectral diversity and arbitrary number of transmit antennas in ISI channels , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[21]  Moe Z. Win,et al.  Space-time-frequency (STF) coding for MIMO-OFDM systems , 2002, IEEE Communications Letters.

[22]  Kung Yao,et al.  Differential unitary space-time-frequency coding for MIMO OFDM systems , 2002, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002..